Kei is an 18 year old who looks like a 15 year old after a three yearlong "standstill" which is a coma-like state that occurs during a time of extreme emotional distress. Standstills are derived from an unknown - possibly psychological - disease that Kei and his friend, Ichigo Morino, have. He tends to be a very frail and shy boy, not often wanting to assert himself when need be.The amount of time he remains in a standstill is random, usually lasting a few minutes to a few hours.